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Finding the Fourth Proportional to 332.40, 498.38 and 178.40

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Solution

The fourth proportional to 332.40, 498.38 and 178.40 is: 267.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.40 : 498.38 = 178.40 : x
  2. Step 2: Convert to fraction form
    332.40/498.38 = 178.40/x
  3. Step 3: Cross multiply
    332.40x = 498.38 × 178.40
  4. Step 4: Simplify right side
    332.40x = 88,910.99
  5. Step 5: Solve for x
    x = 88,910.99/332.40
  6. Step 6: Final answer
    x = 267.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.